Section 5751 Of Article 2. Endorsement And Delivery Of Documents From California Vehicle Code >> Division 3. >> Chapter 2. >> Article 2.

. Upon transfer of the title or interest of the registered owner only in a vehicle registered under this code, the registered owner shall write his signature and address and the transferee shall write his signature and address in the appropriate spaces provided on the certificate of ownership for the vehicle, and the legal owner shall write his signature in the space provided for the new legal owner indicating that he is to retain his legal title and interest.